Boot or shoe



(NQ Model.)

G. F. BUTTERFIELD.

BOOT 0R SHOE.

Patented Mar.. 5,r 1889 "T: j l E 'a Y? i Y www1/aaa y f/// k/i/w/ F; 1 (j E y W IT-N ESSESI UNrrnD STATES -ljareur @triceA GEORGE F. BUTTERFIELD, OF STONEHAM, MASSACHUSETTS.

BOOT OR SHOE.

SPECIFICATION forming part of Letters Patent No. 399,130, dated March 5, 1889'.

Application filed August l0, 1885. Serial No, 173,972. (No model.) I

To @ZZ whom z'; muy concern:

Be it known that I, GEORGE F. BUTTER- FIELD, a citizen oi the United States, residing The drawings annexed illustrate a forni of mold suitable for my purposes, showing the position of the shoe relatively to the rubber at Stoneham, in the county of Middlesex and State of Massachusetts, lia-reinvented certain new and useful Improvements in Rubber- Soled Boots or Shoes; and I do hereby declare that the same are fully described in the Vfollowingspccitication, and illustrated in the accompanying drawin gs.

The especial object ol' this invention to provide an improved boot or shoe having a in the cavity of; the mold. I, however, make no present elaiin on the mold, my invention in thatrespect being best shown in my application, Serial No. 186,513, tiled December 2l, 1885, for \-'ulcauizingniolil. A briet' reference to the parts shown in the drawings will serve to explain the process herein claimed.

Figure l is a longitudinal section through the cap of the mold in the plane of separaleather sole secured to it in any of the usual Ways and a tread-surt`ace ot' india-rubber subsequently applied over the entire bottom of the leather sole and permanently fixed thereon by a coating of cement and the pio cess of vulcanization of the rubber. My invention includes a boot. or shoe so made, and also the described process of manufacture, whereby a shoe otherwise completed is nished by the vulcanixiug of a rubber outer sole upon its leather sole.

Heretofore complete rubber soles have been vulcanized independent of the shoe to which they were to be applied, and such soles Were capable of attachment to shoe -bottoms by cementing, nailing, or sewing through the rubber and leather. It has also been proposed to provide combined rubber and leather soles, united by cement and vulcanizing previous to their attachment. to the boot or shoe, leaving uncovered a suitable margin of the soleleather, outside of the edges of the indiarubber, all around, for sewing, pegging, or nailing on the sole to the shoe through this uncovered margin.

In carrying out my invention l employ a suitable mold adapted to hold the boot or shoe in place and to receive in a proper-shaped cavity th e necessary amount of the raw-rubber compound, applied after the coating of rubber cement directly upon the leather sole of the boot or shoe so held in the mold. This cavity will be tap-sole shaped, or sole-shaped, or soleand-heel shaped, according as it is desired to apply the rubber in either of these forms to the bottom of the boot or shoe. In either case a recess is. formed in the upper part of the mold to admit the body of the shoe, While the bottom of its leather sole ts closely over the cavity containing the rubber.

tion oi the other tivo parts. Fi 2 is atra-nsversc section through the three parts at the line of the heel, and Fig. 3 a like View of the 'forward part of the mold. The lines y and fr, Fig. l, indicate the plane ol the sections, Figs. '2 and f3.

The mold is hollow, its body in two parts, A and Il, united by suitable fastenings, so to close tightly around the shoe held in the recess between them. The mold is completed by a cap, C, bolted to the. parts A and I3 and containing in a proper-shaped cavity the body of rubber, R. E is a lip formed on the parts A and B, to fit into the crevice where the upper leather and sole of the shoe meet tokeep the rubber from the shoe-upper.

I prefer to first shape the portion of rubber compound to be used approximately to the recess by pressure iu a suitable die, so that it will fit upon the sole and heel of the shoe When the mold is closed tightly. Steam-heatis then applied in a proper manner and the expansion and pressure shapes the rubber externally While being cured and causes it to adhere tenaciously to the leather sole, the bottom of which should be clean and fresh When the preliminary coating ot rubber cement is applied, which increases the adhesion of the rubber to the leather by excluding air from between them.

An advantage of my process, by which the leather sole is rst secured to the boot or shoe and the rubber subsequently' vulcanized to its sole, is that the leather sole is covered to its extreme edges, thus concealing the nails, pegs, or stitches and givingawater-proof bottom to the shoe, instead of leaving an uneorered margin all around it to receive the fastenings, which are exposed in the finished shoe.

I claim as my invention and provided with a rubber outer sole secured by cement and vulcanlzaon directly upon the bot-tom of lche leather sole, so as to conceal said sole and itsV fasteuings, substantially as set forth.

In testimony whereof I hereto alix my signa,- ture in presence of two witnesses.

GEORGE F. BUTTERFIELD.

Vitnesses:

A. H. SPENCER, C. G. KEYES. 

